'commit'

LuoGu/RuMen/P1304.cpp

@@ -0,0 +1,24 @@
+#include<bits/stdc++.h>
+
+using namespace std;
+
+bool isPrime(int number) {
+    for (int i = 2; i * i <= number; i++)
+        if (number % i == 0)
+            return false;
+    return true;
+}
+
+int main() {
+    int n;//输入的数
+    cin >> n;
+    //计算从4开始到这个指定数字结束
+    for (int i = 4; i <= n; i += 2) {
+        for (int j = 2; j < i; j++) {
+            if (isPrime(j) && isPrime(i - j)) {
+                cout << i << "=" << j << "+" << i - j << endl;
+                break;
+            }
+        }
+    }
+}